Rain Falls from Earth: Surviving Cambodia's Darkest Hour as Self (voice)
2024
The Six Triple Eight
2024
Merchant Ivory as Self
2024
A Case for Love as Self
2023
Liv Ullmann: A Road Less Travelled as Self (3 episodes)
2022
The Dropout as George Shultz (5 episodes)
2021
Kurt Vonnegut: Unstuck in Time as Self (voice)
2020
The Man in the Woods as Headmaster Waldorf
2020
Gatsby in Connecticut: The Untold Story as Self
2018
On the Basis of Sex as Erwin Griswold
2018
The Mayo Clinic as Charlie Mayo
2018
Jane Fonda in Five Acts as Self - Actor
2017
Godless as Marshall John Cook (7 episodes)
2017
Monkey Business: The Adventures of Curious George's Creators as Narrator (voice)
2017
Dateline: Saigon as Narrator (voice)
2016
Miss Sloane as George Dupont
2016
Anesthesia as Prof. Walter Zarrow
2015
The Late Show with Stephen Colbert as Self (1 episode)
2015
And It Was Good as Judge Alexander Baas / Doctor / Gravedigger
2015
Grace and Frankie as Sol Bergstein (94 episodes)
2015
Dean Smith as Narrator
2015
Please Be Normal as Dad
2012
The Newsroom as Charlie Skinner (25 episodes)
2011
Prohibition as Reader (voice) (3 episodes)
2010
The Rally to Restore Sanity and/or Fear as Self
2007
Masters of Science Fiction (1 episode)
2006
The Best of The Tony Awards: The Plays as John Honeyman (segment "A Walk in the Woods")
2005
The Colbert Report (1 episode)
2005
Law & Order: Trial by Jury as Jack McCoy (2 episodes)
2003
The Commission as J. Lee Rankin
2003
Le Divorce as Chester Walker
2000
A House Divided as David Dickson
1999
The Unfinished Journey as Narrator (voice)
1999
Law & Order: Special Victims Unit as Jack McCoy (4 episodes)
1999
In Bad Taste as Self
1999
Moment of Impact: Stories of the Pulitzer Prize Photographs as Self / Host / Narrator
1999
Family Guy as Bruce Kaplan (voice) (2 episodes)
1998
Exiled as Jack McCoy
1998
Miracle at Midnight as Dr. Karl Koster
1997
Lewis & Clark - The Journey of the Corps of Discovery as Thomas Jefferson (voice) (2 episodes)
1997
The View as Self (1 episode)
1997
The View as Self - Guest (1 episode)
1997
Thomas Jefferson as Thomas Jefferson (voice) (2 episodes)
1997
Shadow Conspiracy as The President
1996
The Proprietor as Harry Bancroft
1995
Nixon as Richard Helms
1995
The Journey of August King as Mooney Wright
1995
Amazing Stories: The Movie IV as (archive footage)
1995
Time Life's Lost Civilizations as Narrator (10 episodes)
1994
Tennessee Williams: Orpheus of the American Stage as Tom Wingfield (archive footage)
1994
The Enemy Within as President William Foster
1994
Serial Mom as Eugene Sutphin
1994
David's Mother as John Nils
1994
Assault at West Point: The Court-Martial of Johnson Whittaker as Daniel Chamberlain
1993
I'll Fly Away: Then and Now as Forrest Bedford
1993
Homicide: Life on the Street (2 episodes)
1993
A Captive in the Land as Royce
1992
Earth and the American Dream as Reader (voice)
1992
HBO First Look (1 episode)
1991
Mindwalk as Jack Edwards
1991
I'll Fly Away as Forrest Bedford (39 episodes)
1991
The Man in the Moon as Matthew Trant
1990
The Civil War as Abraham Lincoln (9 episodes)
1990
Law & Order as Jack McCoy (405 episodes)
1990
Night of 100 Stars III as Self
1989
The Nightmare Years as Bill Shirer (4 episodes)
1989
Crimes and Misdemeanors as Ben
1989
Welcome Home as Woody
1989
Lantern Hill as Andrew Stuart
1989
Tales from the Crypt as G.G. Devoe (1 episode)
1988
Terrorist on Trial: The United States vs. Salim Ajami as Prosecutor
1988
Lincoln as Abraham Lincoln (2 episodes)
1988
A Walk in the Woods as John Honeyman
1987
Devil's Paradise as Jones
1987
Swimming to Cambodia as Additional cast from 'The Killing Fields' (archive footage)
1987
The Room Upstairs as Travis Coles
1986
Flagrant désir as Inspecteur Gerry Morrison
1986
Just Between Friends as Harry Crandall
1986
The Fifth Missile as Capt. Allard Renslow
1986
Hannah and Her Sisters as David (uncredited)
1985
Amazing Stories as Jordan Manmouth (1 episode)
1985
Warning Sign as Cal Morse
1985
Love Lives On as Bernie
1985
Finnegan Begin Again as Paul Broadbent
1984
The Killing Fields as Sydney Schanberg
1984
The Boy Who Loved Trolls as Ofoeti
1984
Jeopardy! (1 episode)
1983
Dempsey as Doc Kearns
1983
In Defense of Kids as Paul Wilcox
1982
Games Mother Never Taught You as David Bentells
1980
Heaven's Gate as Frank Canton
1980
Friendly Fire as C.D.B. Bryan
1980
Oppenheimer as Robert Oppenheimer (7 episodes)
1980
Hopscotch as Jack Cutter
1980
Sweet William as William McClusky
1979
Eagle's Wing as White Bull
1977
Capricorn One as Lt. Col. Peter Willis
1976
Sweet Revenge as Le Clerq
1975
Saturday Night Live as Self - Cameo (uncredited) (3 episodes)
1975
Journey into Fear as Mr. Graham
1975
Rancho Deluxe as Cecil Colson
1975
People's Choice Awards as Self - Presenter (1 episode)
1974
Reflections of Murder as Michael Elliott
1974
The Great Gatsby as Nick Carraway
1973
The Glass Menagerie as Tom Wingfield
1973
Much Ado About Nothing as Benedick
1972
Mahoney's Last Stand as Felix
1972
Savages as James, the Limping Man
1971
Who Killed Mary Whats'ername? as Alex Monte
1970
Cover Me Babe as Cameraman
1969
Generation as Desmond
1966
The Plastic Dome of Norma Jean as Andy
1961
Dr. Kildare as Mark (2 episodes)
1951
Hallmark Hall of Fame as Travis Coles (1 episode)